class_docstr: Container for measurements of scalar metrics.
  
  There is exactly one ScalarMetricLogEntry per logged scalar metric value.
code: def __init__(self, name, step, timestamp, value):
      self.name = name
      self.step = step
      self.timestamp = timestamp
      self.value = value
  
file_path: sacred/sacred/metrics_logger.py
imports: import datetime
  import sacred.optional
  from queue import Queue, Empty
label_desc: Use image node_id 1 to create a new ScalarMetricLogEntry object  with example: obj = ScalarMetricLogEntry(name, step, timestamp, value)